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John M. Minney, Consulting Engineer <br /> 4180 W. Alamos, Suite 102 <br /> JMM Fresno, California 93722 <br /> (209) 275-5937 <br /> J. T. TUCI�` <br /> May 20 , 1991 JOB 91009 <br /> Don Lovasik , Environmental Engineer <br /> Spreckels Sugar <br /> P .O. Box 9025 <br /> Pleasanton CA 94566-4065 <br /> SUBJECT : Fuel Oil Leak <br /> Manteca, California <br /> Dear Sir : <br /> As requested , I have performed sampling and testing for a fuel oil line <br /> leak at the Manteca factory. <br /> The location of the leak is shown on Figure 1 . The pipe was exposed and <br /> a temporary splice welded in . A new pipe has since been constructed. <br /> Four soil sampling locations are included with this report . The sample <br /> corresponding to "high stockpile" refers to a composite sample of the <br /> visibly most concentrated material ; the laboratory test results indicate <br /> the presence of 21 , 000 ppm total hydrocarbons . <br /> The sample corresponding to "low stockpile" refers to a composite of the <br /> visibly least concentrated material ; the laboratory test results <br /> indicate the presence of 9400 ppm total hydrocarbons . <br /> The sample corresponding to "leak" refers to a soil sample taken in the <br /> base of the excavation for the temporary splice ; the laboratory test <br /> results were none detected. <br /> The sample corresponding to "bubble" refers to the pavement subgrade <br /> where the fuel leak was disclosed by a bubble created in the asphaltic <br /> concrete pavement ; the laboratory test results are none detected. <br /> All testing was performed by BSK and Associates , which is certified by <br /> the Department of Health Services for the methods contained herein . <br />